examples/hello_foo.sh
#!/usr/bin/env bash

echo "Hello $1"


$1 $2 $3
$*      which is $1 $2 $3 ...   but that splits up the spaces that might be inside $1 or $2 ..  
"$*"    is the same
$@      is the same but
"$@"    is "$1" "$2" "$3" ...